Question to the editor cracks, The permanent fog on Linke Rheinstrecke even on clear sunny days is quite annoying. It's probably there to cover up the simplistic distant scenery. I want to make a small mod removing it. Where is the value defined?
Nevermind. GodMode has the answer. For a clean LFR atmosphere use TimeOfDaySystem.Fog.StartDistance and raise the value (default 400). No need for a mod. 400 vs 60000
You might take notice of this post by Matt of the console commands with which you can change the fog density and other weather conditions within the Editor (not sure how you would implement these as mod though):
God Mode has a window to change these settings (basic weather control like in the menu), yes. But the issue is not weather related. (And noticeable fog actually starts at 0.001) The thing is that fog I mean is always present (even at zero), it's not volumetric fog but "hardcoded" into ToDv4 to start enshrouding scenery at a distance of 400 metres (and is height related). That's why I asked the question, as for example ToDv3 routes had a PostProcessVolume setting where the overblown 2.5x Bloom (check TOR, ECW or HSC) was defined and could only be lowered using r.BloomQuality which was not a fix but a workaround as you'd lose the sun glare. (Fixed via a .umap mod)
You could try to tweak the settings of the TOD4 actor whereever possible. Problem is that the routes come cooked and the Editor doesn't allow you to tweak most of the settings. You either can't tick/untick an option or if you change a parameter it changes to its default (cooked) state. However, for the PostProcessVolume I was able to tweak some settings (I guess this was what you meant with hardcoded?) Aside of that, We almost have no information from DTG to do advanced things like that. All what we have is the few written tutorials out and the three masterclass videos which just covered the absolutely elemantory things and if that only very roughly, unfortunately. Either you find help or a way to do it by yourself or you can't do it.
I've checked that Component and found nothing related to fog - so it seems to be a core ToD4 property. I am using tools that allow me to alter cooked files directly - sort of hex editing. And I found adjusting the Fog.StartDistance ingame to be the best method, either directly or via .ini. Thanks for answering!